This specification covers the properties and test methods for
porous high density and ultra high molecular weight polyethylenes
intended for use in surgical implants. The porous polyethylene may
be used as a free standing product or as a coating on a substrate
in nonloaded applications.

Evaluation of tissue response to a porous polyethylene must be
completed. Guidance in establishing biocompatibility may be found
in the list of references.

Clinical experience and animal studies have shown that tissue
will grow into the open pores of porous polyethylene. The tissue
ingrowth into the pores may allow for the establishment of implant
fixation.

The values stated in SI units are to be regarded as standard. No
other units of measurement are included in this standard.

This section does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.